SB2022112004 - SUSE update for the Linux Kernel (Live Patch 31 for SLE 15 SP1) 

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Main Vulnerability Database SB2022112004

SB2022112004 - SUSE update for the Linux Kernel (Live Patch 31 for SLE 15 SP1)

Published: November 20, 2022 Updated: June 7, 2024

Security Bulletin ID SB2022112004
Severity
Low
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Out-of-bounds write (CVE-ID: CVE-2021-33655)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error in FBIOPUT_VSCREENINFO IOCTL. A local user can trigger an out-of-bounds write error and execute arbitrary code with elevated privileges.


2) Double Free (CVE-ID: CVE-2022-2588)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a double free error within the network packet scheduler implementation in the route4_change() function in Linux kernel when removing all references to a route filter before freeing it. A local user can run a specially crafted program to crash the kernel or execute arbitrary code.


3) Use-after-free (CVE-ID: CVE-2022-42703)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error within the mm/rmap.c in the Linux kernel, related to leaf anon_vma double reuse. A local user can trigger a use-after-free error and crash the kernel.


Remediation

Install update from vendor's website.

References